Optimal Operation of PV-Diesel MicroGrid with Multiple Diesel Generators Under Grid Blackouts

Alramlawi, Mansour; Timothy, Ayeni Femi; Gabash, Aouss; Mohagheghi, Erfan; Li, Pu

doi:10.1109/eeeic.2018.8494571

Cited by 18 publications

(10 citation statements)

References 23 publications

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“…Energy access in remote areas of Sub-Saharan African countries is limited partly due to high costs of grid extension and partly due to low population densities and low energy densities. Lack of real-time data for energy resources and village electricity power consumption data limits the use of software or methods based on real-time models [1][2][3][4][5][6][7]. An energy balance model is presented in this study and tested on a monthly energy demand profile for a hypothetical village with 50 low voltage grid-connected customers and the energy outpur of solar modules at Garoua.…”

Section: Discussionmentioning

confidence: 99%

“…The approach used in Senegal involved expenditure that most Sub-Saharan countries may not be able to mobilize to realize similar studies in all non-electrified villages. Studies on the design and optimal operation of either PV-diesel micro-grids with battery or multiple generators and PV-battery hybrid systems under grid scheduled blackouts have been proposed for increasing energy access in developing countries [5][6][7]. These studies focus on real-time models which depend on real-time data like HOMER.…”

Section: Mots Clésmentioning

confidence: 99%

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Photovoltaic Hybrid Systems for remote villages

Ngundam¹,

Kenné²,

Nfah³

2019

Revue Africaine De Recherche en Informatique Et Mathématiques Appliquées

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International audience Electricity access in remote areas of Sub-Saharan Africa is limited due to high costs of grid extension to areas characterised by low population and low energy densities. Photovoltaic hybrid systems can be computed using an energy balance equation involving one unknown. For hypothetical village with an average daily energy demand of 153.6 kWh/d, the monthly energy output of photovoltaic modules at Garoua, Cameroon, enabled the evaluation of feasible photovoltaic hybrid (PVHS) options. An option with a renewable energy fraction of 0.557 having lower initial investments is suggested for electrification of more remote villages in Sub-Saharan African countries which have high solar radiation levels. This option comprises a 23.56 kWp PV array, a 15 kWp PV inverter, a 25 kW bi-directional inverter, a battery bank of capacity 324.48 kWh and a 25 kW diesel generator with an operating time of 1309 h/yr or 3.59h/d. The size of the PV array determined is smaller compared to the sizes of PV arrays which have been evaluated in the range 30-45 kWp using HOMER software for medium villages in Senegal. L’access à l’éléctricité en Afrique Sub-saharienne est limité par le cout élevé d’extension des resaux electriques vers les zones isolées caracterisés par une faible densité de la population et une faible densité de consummation de l’energie electrique. Les systemes hyrides photovoltaiques peuvent étre evalués avec une equation energétique à un inconue. Pour un village hypothetique avec une demande énergétique quotidienne de 153.6 kWh/jr, les productions énergetique mensuelles des modules photovotaiques à Garoua, au Cameroun, ont permis l’evaluation des options photovoltatiques hybrides realisables. Une option avec une fraction d’énergie renouvelable de 0,557 ayant un investment initial inféreur est suggerée pour l’électrification de villages plus éloignés dans l’Afrique subsaharienne qui ont des niveaux élevés de rayonnement solaires. Cette option comprend un générateur photovotaique de 23,56 kWc, un onduleur photovoltaique de 15 kWc, un inverseur bidirectionnel de 25 kW, un groupe de batterie d’une capacité de 324.48 kWh, et un groupe electrogene diesel de 25 kW avec un temps de fonctionnement de 1309 h/an ou 3.59h/j. La taille du générateur photovoltaique determiné est inférieur à celle des générateurs photovoltaiques dans la plage allant de 30 à 45 kWc à l’aide du logiciel HOMER pour les villages moyenne du Senegal comptant 750 habitants.

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Section: Discussionmentioning

confidence: 99%

Section: Mots Clésmentioning

confidence: 99%

Photovoltaic Hybrid Systems for remote villages

Ngundam¹,

Kenné²,

Nfah³

2019

Revue Africaine De Recherche en Informatique Et Mathématiques Appliquées

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“…However, it is impossible to precisely forecast the values of these variables. In addition, there exist many other uncertainties (e.g., REG [38,[124][125][126][127][128], demand power [35,122,129,130], line outage [131][132][133], generator outage [131], plug-in electric vehicles [134,135], fuel price [131,136,137], and grid blackouts [138][139][140][141]) in the operation of energy networks. This poses numerous challenges for network operators when ensuring the reliability of the optimal operation strategies.…”

Section: Stochastic Emssmentioning

confidence: 99%

A Survey of Real-Time Optimal Power Flow

et al. 2018

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There has been a strong increase of penetration of renewable energies into power systems. However, the renewables pose new challenges for the operation of the networks. Particularly, wind power is intermittently fluctuating, and, therefore, the network operator has to fast update the operations correspondingly. This task should be performed by an online optimization. Therefore, real-time optimal power flow (RT-OPF) has become an attractive topic in recent years. This paper presents an overview of recent studies on RT-OPF under wind energy penetration, offering a critical review of the major advancements in RT-OPF. It describes the challenges in the realization of the RT-OPF and presents available approaches to address these challenges. The paper focuses on a number of topics which are reviewed in chronological order of appearance: offline energy management systems (EMSs) (deterministic and stochastic approaches) and real-time EMSs (constraint satisfaction-based and OPF-based methods). The particular challenges associated with the incorporation of battery storage systems in the networks are explored, and it is concluded that the current research on RT-OPF is not sufficient, and new solution approaches are needed.Energies 2018, 11, 3142 2 of 20 time. However, the incorporation of BSSs into the network leads to dynamic state operations and thus introduces dynamic model equations to the OPF, which makes the problem more complex to solve. This complexity is due to the fact that the dynamic optimization is described by differential/difference equations, whereas static optimization requires only algebraic equations [30].Another issue is that the REG rate is uncertain. It means their output cannot be forecasted accurately, and there may be discrepancies between the forecasted and actually realized values. The uncertainties can lead to constraint violations and thus safety problems if they are not handled properly. Therefore, deterministic OPF methods are not suitable for the real operation of the networks, or their solutions need further modifications before realization. Besides, owing to fast fluctuating REG, in particular wind power, the network operators need to fast update-i.e., in real-time-the operation strategies correspondingly, in order for the network to operate economically and in its feasible region. Therefore, the real-time energy management systems (RT-EMSs) have attracted increasing interest from many researchers. In this paper, we classify the RT-EMSs into two main categories: (1) constraint satisfaction-based RT-EMSs, and (2) OPF-based RT-EMSs. The former can satisfy the technical constraints of the network in real time, but the solutions may not be optimal. The latter provides optimal solutions in real time while satisfying the constraints. It is noted that the technical constraints could be different for these two categories, depending on the components of the network (details can be seen in Section 2).The remainder of the paper is organized as follows: Section 2 provides the general formulation of OPF...

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“…In the third industry revolution human relations from the hierarchical structures to the lateral ones are expected to rearrange fundamentally and will affect how businesses are conducted, Society govern, educate and promote civic life for our children. Rifkin calls the three industrial revolution's five pillars: (1) move to renewable; (2) Turning the inventories of buildings into green microwave power plant for renewable energy generation; (3) using storage technologies in all buildings and infrastructure for intermittent storage;(4) using internet technology to convert the power grid into a power Internet that serves to interact and transact millions of users through the Internet; and (5) converting the transit fleet into plug-in vehicles that can purchase and sell green energy via an interactive electricity grid. Although some of these suggestions are feasible based on assumptions that storage costs are declining the overall view is clear.…”

Section: Introductionmentioning

confidence: 99%

Integration of Distributed Generating Systems for Non-Linear Loads

Sharma¹,

Imran²

2021

JUSST

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The independent small-scale networks including sustainable power sources have been used in remote regions around the globe. Nonetheless, the irregularity of vitality sources may cause an enormous variance of the miniaturized scale framework recurrence. Because of consistently expanding vitality utilization, rising open familiarity with ecological assurance, and relentless advancement in power deregulation, distributed generation (DG) frameworks have pulled in expanded intrigue. Wind and photovoltaic (PV) power age are two of the most encouraging sustainable power source advancements. Fuel cell (FC) frameworks likewise show incredible potential in DG utilizations of things to come because of their quick innovation improvement and numerous benefits they have, for example, high effectiveness, zero or low outflow (of contamination gases), and adaptable measured structure. In proposition investigated work Integration of Distributed Generating Systems for Non-straight Loads will be proposed. A run-of-the-mill wind-PV-diesel reconciliation which comprises of diesel generator, PV framework, wind turbine generator (WTG), BESS, and burden, is utilized for the proposed models and controllers. We reenact and Integration Distributed Generating Systems for Non-straight Loads on the MATLAB/SIMULINK and portions of coordinated vitality frameworks are analyzed. The coordinated PV framework is normally controlled to work in the maximum power point tracking (MPPT) mode. The battery vitality stockpiling framework is worked inconsistent force charging or releasing mode. So as to give an incorporated vitality framework associated with lattice relying upon singular vitality necessities, the Integrated Energy Systems can be extra to a current vitality source to lessen petroleum product utilization or an independent for complete non-renewable energy source uprooting Through the broad joining of vitality foundations it is conceivable to upgrade the supportability, adaptability, steadiness, and productivity of the general vitality framework. The reproduction of incorporated vitality frameworks is done in MATLAB/SIMULINK. And all framework results will be done by Matlab reproduction is proposed for disconnected smaller scale matrices with sustainable sources. In the exhibited method, the pitch point controller is intended for wind turbine generator (WTG) framework to smooth breeze power yield. The proposed procedure is tried in a regular secluded incorporated small-scale network with both PV and wind turbine generators.

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Optimal Operation of PV-Diesel MicroGrid with Multiple Diesel Generators Under Grid Blackouts

Cited by 18 publications

References 23 publications

Photovoltaic Hybrid Systems for remote villages

Photovoltaic Hybrid Systems for remote villages

A Survey of Real-Time Optimal Power Flow

Integration of Distributed Generating Systems for Non-Linear Loads

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